Type regedit, and then click OK. \015\012If you are prompted for an administrator password or for a confirmation, type the password, or click Allow. \015\012

In the navigation pane, locate and then click the following registry subkey: \015\012HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E965-E325-11CE-BFC1-08002BE10318}\015\012

In the right pane, click UpperFilters.

Note You may also see an UpperFilters.bak registry entry. You do not have to remove that entry. Click UpperFilters only. If you do not see the UpperFilters registry entry, you still might have to remove the LowerFilters registry entry. To do this, go to step 8. \015\012

On the Edit menu, click Delete. \015\012

When you are prompted to confirm the deletion, click Yes. \015\012

In the right pane, click LowerFilters.

Note If you do not see the LowerFilters registry entry, unfortunately this content cannot help you any further. On the Edit menu, click Delete. \015\012

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